Which intrusive feature may start as a sill but, as more magma builds, it pushes upward like a lens

Answers

Answer 1

Answer: An intrusive feature that starts as a sill, but build up with magma into a lens-like structure is a batholith. A batholith is composed of igneous rocks due to the hardened magma from the Earth's crust. The opposite of sill, dike, builds up to form a laccolith, another intrusive feature with a mushroom-like structure.

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What is the name of the polyatomic ion in the compound Na2O2?(1) hydroxide (3) oxide (2) oxalate (4) peroxide
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If 20.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 37.5 mL of 0.124 M HCl, what is the concentration of the Ca(OH)2 solution? Show all of the work needed to solve this problem. Ca(OH)2 + 2 HCl yields 2 H2 O + CaCl2
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Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined together by a. chemical bonds.
b. nuclear energy.
c. sharing nuclei.
d. attractive forces.

Answers

Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined together by chemical bonds i.e covalent bond in this molecule so option A is correct
hope this helps

Answer:

a. Chemical bonds.

Explanation:

Hello,

In this case, it is necessary to know that when two elements are not stable by their own they should bond with an other atom of the same element via chemical bonds whereby the valence electrons act as bridges connecting the atoms. Some examples are diatomic-gaseous hydrogen, oxygen, nitrogen, chlorine, iodine, fluorine and bromine. Moreover, such chemical bonding is represented by lines binding the elements as shown on the attached picture.

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Which of the following uses the relationship between the DNA of various groups of organisms to determine how long ago they diverged evolutionarily from one another? Carbon dating
Fossils
Timelines
Molecular clocks

Answers

Molecular clocks use the relationship between the DNA of several groups of organisms to evaluate how long ago they diverged evolutionarily from one another. Therefore, option (4) is correct.

What are Molecular clocks?

The molecular clock can be described as a figurative term for a technique that utilizes the mutation rate of biomolecules to determine the time when two or more life forms diverged. The biomolecular data used are usually nucleotide sequences for DNA, RNA, or amino acid sequences for proteins.

The benchmarks for calculating the mutation rate are often fossil or archaeological dates. The molecular clock is commonly used in molecular evolution to estimate times of speciation or radiation.

The molecular clock can only give one time period as it cannot assign concrete dates. For viral phylogenetics and ancient DNA studies, the areas of evolutionary biology, the intermediate samples can be utilized to more precisely calibrate the molecular clock.

Learn more about Molecular clocks, here:

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Molecular clocks because the measure changes in DNA or proteins to indicate degrees of relationship among species.Molecular clocks, together with evidence from the fossil record, allows scientists to estimate how long ago various groups of organisms diverged evolutionarily from one another

The respiratory system takes oxygen into the human body and expels carbon dioxide. Which body system interacts with the respiratory system to transport these gases to and from the various parts of the body?A. the nervous system
B. the digestive system
C. the urinary system
D. the circulatory system

Answers

The answer is D, the circulatory system.

Answer:

The answer is D, the circulatory system.

Explanation:

I got a a on the test

A 10.35g piece of copper metal was heated to 85.5 degrees C and then placed into 23.6g of water. the initial temperate of the water was 18.3 degrees C. what was the final temperature?

Answers

Answer:

$T_F=20.91^(\circ)C$

Explanation:

For this problem we have to start with the heat equation:

$Q=mCp$ ΔT

In which the delta symbol is:

ΔT= $T_f_i_n_a_l-T_i_n_i_t_i_a_l$

All the heat from copper would be transfer into the water, so:

$Q_m_e_t_a_l=-~Q_w_a_t_e_r$

Now, we can identify the variables:

$m~_C_u=10.35~g$

$m~_H_2_O=23.6~g$

$T_i~_C_u=85.5^(\circ)C$

$T_i~H_2O=18.3^(\circ)C$

$Cp~_C_u~=0.385(J)/(g^(\circ)C)$

$Cp~_H_2_O~=4.184(J)/(g^(\circ)C)$

When we put all together in the equation we will have:

$(10.35~g)*(0.385(J)/(g^(\circ)C))*(T_F-85.5^(\circ)C)=-(23.6~g)*(4.184(J)/(g^(\circ)C))*(T_F-18.3^(\circ)C)$

$3.99~T_F-~340=-98.74~T_F+1806.99$

$3.99~T_F+~98.74~T_F=340+1806.99$

$102.72~T_F=2147.68$

$T_F=20.91^(\circ)C$

We know that the heat that escapes the copper metal is equal to the heat that is added to the water bath.

Thus we can use the MC∆T formula to solve for the final temperature
We need to set up the formula for both the change in temperature of the copper as well as the water
thus
Mass(Cu) * Specific Heat capacity(Cu) * (Final temp - initial temp)(Cu) =
Mass(H2O) * Specific Heat of Water(H2O) * (Final - initial temp)(H2O)

Now we can substitute the given info.
specific heat of copper = 0.386 and water is 4.184
10.35g * 0.386 * (x - 85.5) = 23.6g * 4.184 * (x - 18.3)
Now You just need to solve for X. Also remember to take the absolute value of the left side as it will become negative but really the change in heat or ∆H is equal

How heart attacks and Strokes caused by cholesterol

Answers

With high cholesterol, you can develop fatty deposits in your blood vessels. Eventually, these deposits grow, making it difficult for enough blood to flow through your arteries. Sometimes, those deposits can break suddenly and form a clot that causes a heart attack or stroke.

Answer:

Cholesterol is a waxy substance found in your blood. Your body needs cholesterol to build healthy cells, but high levels of cholesterol can increase your risk of heart disease.

Explanation:

High cholesterol can cause a dangerous accumulation of cholesterol and other deposits on the walls of your arteries (atherosclerosis). These deposits (plaques) can reduce blood flow through your arteries, which can cause complications, such as:

Chest pain. If the arteries that supply your heart with blood (coronary arteries) are affected, you might have chest pain (angina) and other symptoms of coronary artery disease.

Heart attack. If plaques tear or rupture, a blood clot can form at the plaque-rupture site — blocking the flow of blood or breaking free and plugging an artery downstream. If blood flow to part of your heart stops, you'll have a heart attack.

Stroke. Similar to a heart attack, a stroke occurs when a blood clot blocks blood flow to part of your brain.

Which of the following statements are correct about the chemical reaction?H2 + O2 -> H2O2
versus
2 H2 + O2 -> 2 H2O?
They are both balanced chemical equations.
The two reactions are equivalent.
The laws of thermodynamics apply to both.
Conservation of mass applies to both.

Answers

The correct answer for the question that is being presented above is this one: "They are both balanced chemical equations." The statement that is correct about the chemical reaction is that both chemical reaction are balanced chemical equations.

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